Physics
Grade-8
Easy
Question
The electrical appliances make noise when they are used. This is because of the _____ of their internal parts.
- Burning
- Vibration
- Fusing
- Short circuiting
Hint:
Electrical appliances make sounds by the vibration of their internal parts.
The correct answer is: Vibration
The electrical appliances make noise when they are used. This is because of the vibration of their internal parts.
- A sound is a form of mechanical kinetic energy.
- It creates vibration when it is subjected to any force.
- This vibration produces sound.
- The vibration created in the internal parts of the electrical appliances makes the sound.
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